Page type “node management” with node family population bigger than one

Can you please take a look at these questions?

In the situation of page type “node management” with node family population bigger than one:

1. Why there’s two buttons (forward and back) under “node add form” and “node edit mode” if both take us always to same place (the page being edited)?

2. Don’t you think its best to just have one button to update and perhaps one with “cancel”?

3. I think there’s no way to prevent a node from being created if all fields are empty, am I correct?

I’ m sorry if you have a hard time understanding me, this module is very complex (and powerful) and english is not my first language.

Thanks,
introfini